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| 型号： | MCP6023T-E/ST |
| 厂商： | Microchip Technology |
| 文件页数： | 9/42页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP SNGL 2.5V 10MHZ 8TSSOP |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 7 V/µs |
| 增益带宽积： | 10MHz |
| 电流 - 输入偏压： | 1pA |
| 电压 - 输入偏移： | 500µV |
| 电流 - 电源： | 1mA |
| 电流 - 输出 / 通道： | 30mA |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
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2009 Microchip Technology Inc.
DS21685D-page 17
MCP6021/1R/2/3/4
4.0
APPLICATIONS INFORMATION
The MCP6021/1R/2/3/4 family of operational amplifiers
are fabricated on Microchip’s state-of-the-art CMOS
process. They are unity-gain stable and suitable for a
wide range of general-purpose applications.
4.1
Rail-to-Rail Input
4.1.1
PHASE REVERSAL
The MCP6021/1R/2/3/4 op amp is designed to prevent
phase reversal when the input pins exceed the supply
voltages. Figure 2-42 shows the input voltage exceed-
ing the supply voltage without any phase reversal.
4.1.2
INPUT VOLTAGE AND CURRENT
LIMITS
The ESD protection on the inputs can be depicted as
shown in Figure 4-1. This structure was chosen to
protect the input transistors, and to minimize input bias
current (IB). The input ESD diodes clamp the inputs
when they try to go more than one diode drop below
VSS. They also clamp any voltages that go too far
above VDD; their breakdown voltage is high enough to
allow normal operation, and low enough to bypass
quick ESD events within the specified limits.
FIGURE 4-1:
Simplified Analog Input ESD
Structures.
In order to prevent damage and/or improper operation
of these op amps, the circuit they are in must limit the
currents and voltages at the VIN+ and VIN– pins (see
Absolute Maximum Ratings at the beginning of
shows the recommended approach to protecting these
inputs. The internal ESD diodes prevent the input pins
(VIN+ and VIN–) from going too far below ground, and
the resistors R1 and R2 limit the possible current drawn
out of the input pins. Diodes D1 and D2 prevent the
input pins (VIN+ and VIN–) from going too far above
VDD, and dump any currents onto VDD. When
implemented as shown, resistors R1 and R2 also limit
the current through D1 and D2.
FIGURE 4-2:
Protecting the Analog
Inputs.
It is also possible to connect the diodes to the left of
resistors R1 and R2. In this case, current through the
diodes D1 and D2 needs to be limited by some other
mechanism. The resistors then serve as in-rush current
limiters; the DC current into the input pins (VIN+ and
VIN–) should be very small.
A significant amount of current can flow out of the
inputs when the common mode voltage (VCM) is below
high impedance may need to limit the useable voltage
range.
4.1.3
NORMAL OPERATION
The input stage of the MCP6021/1R/2/3/4 op amps use
two differential CMOS input stages in parallel. One
operates at low common mode input voltage (VCM),
while the other operates at high VCM. WIth this topol-
ogy, the device operates with Vcm up to 0.3V above
VDD and 0.3V below VSS.
4.2
Rail-to-Rail Output
The Maximum Output Voltage Swing is the maximum
swing
possible
under
a
particular
output
load.
According to the specification table, the output can
reach within 20 mV of either supply rail when
information concerning typical performance.
4.3
Capacitive Loads
Driving large capacitive loads can cause stability
problems for voltage feedback op amps. As the load
capacitance increases, the feedback loop’s phase
margin decreases, and the closed loop bandwidth is
reduced. This produces gain-peaking in the frequency
response, with overshoot and ringing in the step
response.
Bond
Pad
Bond
Pad
Bond
Pad
VDD
VIN+
VSS
Input
Stage
Bond
Pad
VIN–
V1
MCP602X
R1
VDD
D1
R1 >
VSS – (minimum expected V1)
2mA
R2 >
VSS – (minimum expected V2)
2mA
V2
R2
D2
R3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP6023T-I/MS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Rail-to-Rail Input/Output, 10 MHz Op Amps |
| MCP6023T-I/OT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Rail-to-Rail Input/Output, 10 MHz Op Amps |
| MCP6023T-I/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Rail-to-Rail Input/Output, 10 MHz Op Amps |
| MCP6023T-I/SL | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Rail-to-Rail Input/Output, 10 MHz Op Amps |
| MCP6023T-I/SN | 功能描述:运算放大器 - 运放 Single 2.5V 10MHz RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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